package com.baomidou.springmvc.interceptor;

import java.io.BufferedReader;
import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;

public class HttpServletRequestReplacedFilter implements Filter {  
	  @Override  
	    public void init(FilterConfig filterConfig) throws ServletException {  
	        //Do nothing  
	    }  
	  
	    @Override  
	    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {  
	        ServletRequest requestWrapper = null;  
	        if(request instanceof HttpServletRequest) {  
	            requestWrapper = new BodyReaderHttpServletRequestWrapper((HttpServletRequest) request);  
	        }  
	        if(null == requestWrapper) {  
	            chain.doFilter(request, response);  
	        } else {  
	            chain.doFilter(requestWrapper, response);  
	        }  
	          
	    }  
	  
	    @Override  
	    public void destroy() {  
	        //Do nothing  
	    }  }
